Safe Frame is not showing

Does anyone else experience this issue?

I do have it selected in the settings

Hi carl_harris ,

Are you sure that your viewport Projection mode is set to Perspective.
By default Rhino does not show safeframes in Parallel views.

If this is not the problem then, try the same in a new file.
If it works as expected, please share the project with the issue for further investigation on our side.

Konstantin